Microsoft Flight Simulator

# Microsoft Flight Simulator: AMD Ryzen 5 8400F + AMD Radeon RX 7900 XT

The benchmark data shows a high-resolution-oriented pairing: at 4K Ultra this combo holds 59 FPS average, while at 1080p Low it reaches 177 FPS. The spread across resolutions and settings reveals a system that scales strongly with GPU load but also demonstrates solid CPU headroom at lower resolutions. With a combo rank of 664 out of 3,714 tested configurations, this pairing sits in the top 18% of all tested combos for Microsoft Flight Simulator.

Resolution Scaling

The measured FPS data shows a clear pattern: as resolution increases, average frame rates drop consistently across all settings presets. At Low settings, the transition from 1080p to 1440p costs 34 FPS (177→143), and moving from 1440p to 4K costs another 37 FPS (143→106). This represents a 40% total reduction from 1080p to 4K at Low settings.

At High settings, the scaling is somewhat steeper in absolute terms: 104 FPS at 1080p drops to 84 FPS at 1440p (−20 FPS), then further to 62 FPS at 4K (−22 FPS). The relative drop from 1080p to 4K here is 40%, identical to Low settings. Ultra settings show a similar pattern: 99→80→59 FPS across the three resolutions, a 40% total decline.

Medium settings provide the only complete min/max data in the measured set. At 1080p Medium, the average is 138 FPS with a minimum of 117 and maximum of 159. At 1440p Medium, the average falls to 111 FPS with min/max of 95/128. At 4K Medium, the average drops to 82 FPS with min/max of 70/94. The min-to-max spread narrows as resolution increases—42 FPS at 1080p, 33 FPS at 1440p, and 24 FPS at 4K—suggesting that higher resolutions smooth out frame time variance.

The fact that every settings preset shows nearly identical proportional scaling (around 40% reduction from 1080p to 4K) indicates that the limiting component shifts consistently. The RX 7900 XT, with its 20 GB GDDR6 memory and 800.0 GB/s bandwidth, appears to remain the primary constraint at all resolutions, since the Ryzen 5 8400F's 6-core/12-thread configuration provides enough throughput to keep frame rates GPU-bound even at 1080p.

How This Combo Ranks

This pairing achieves a combo rank of 664 out of 3,714 tested configurations in Microsoft Flight Simulator, placing it in the 82nd percentile of all tested combos. The rank reflects the combined capability of the AMD Ryzen 5 8400F and AMD Radeon RX 7900 XT working together in this specific title.

The CPU component of this combo, the Ryzen 5 8400F, holds a percentile rank of 77 among all CPUs in the benchmark database. Its average benchmark score of 25,005 places it within 0.2% of the AMD Ryzen 5 7500F (score 24,964) and 0.3% of the Intel Core i7-11850H (score 24,935). The closest rival above is the AMD EPYC 9474F at 25,103, which outperforms the 8400F by 0.4%. These extremely tight margins (all within 0.4%) indicate that the 8400F sits at a performance equilibrium point where small architectural differences produce negligible real-world impact.

The GPU half of this combo, the RX 7900 XT, demonstrates a different competitive position. Its percentile rank of 55 among all GPUs places it near the median, with an average benchmark score of 13,745. The nearest rival above is the AMD Radeon 660M at 13,812, which leads by 0.5%, while the NVIDIA RTX A2000 Mobile (13,821) and AMD Radeon RX 570X (13,871) follow at 0.5% and 0.9% ahead respectively. The AMD Radeon RX 9070 XT trails by 1.5% with a score of 13,543.

The substantial gap between the CPU's strong percentile (77) and the GPU's mid-pack percentile (55) suggests that in this pairing, the GPU likely represents the more common performance ceiling in Microsoft Flight Simulator, though the measured FPS data shows the combination still delivers playable frame rates across all tested configurations.

FAQ

Q: What is the best resolution for this combo in Microsoft Flight Simulator?

A: The data shows playable performance at all three tested resolutions. At 4K Ultra, the average is 59 FPS, while 1440p Ultra reaches 80 FPS and 1080p Ultra hits 99 FPS. For maximum visual fidelity with playable frame rates, 4K High at 62 FPS or 4K Medium at 82 FPS represent the strongest options.

Q: How much does the GPU limit performance at 1080p?

A: At 1080p Low, the combo achieves 177 FPS, which suggests the CPU is capable of feeding the GPU well beyond what the RX 7900 XT can render at higher settings. The GPU likely becomes the limiting factor above Low settings at 1080p, as frame rates scale down consistently with increased graphical load.

Q: Is there a significant difference between Medium and High settings at 4K?

A: Yes, the gap is 20 FPS. At 4K Medium, the average is 82 FPS with a minimum of 70, while at 4K High the average drops to 62 FPS. This is a 24% reduction for the step from Medium to High.

Q: What frame rate can users expect at 1440p with Medium settings?

A: The measured data shows an average of 111 FPS with a minimum of 95 and maximum of 128. This provides a smooth experience with comfortable headroom above typical 60 FPS targets.

Q: How does the CPU's single-thread performance compare to its multi-thread performance?

A: The Ryzen 5 8400F scores 3,685 in Passmark single-thread tests and 24,389 in Passmark multithread tests. In Cinebench R23, it scores 2,943 single-core and 20,851 multi-core. These results indicate strong per-core performance that benefits simulation games like Microsoft Flight Simulator.

Q: Does this combo maintain minimum frame rates above 60 FPS at any 4K setting?

A: At 4K Medium, the minimum measured FPS is 70, which is above 60. At other 4K settings, minimum data is not available, but the averages of 62 (High) and 59 (Ultra) suggest that minimums could fall below 60 FPS in demanding scenes.

Measured FPS Breakdown

At 1920x1080, the combo delivers its highest frame rates across all settings. Low settings produce an average of 177 FPS. Medium settings average 138 FPS with a minimum of 117 and maximum of 159. High settings average 104 FPS. Ultra settings average 99 FPS. The progression from Low to Ultra shows a 78 FPS reduction, representing a 44% drop from the lowest to highest quality preset.

At 2560x1440, the performance scales down predictably. Low settings average 143 FPS. Medium settings average 111 FPS with a minimum of 95 and maximum of 128. High settings average 84 FPS. Ultra settings average 80 FPS. The reduction from 1080p to 1440p at each settings level is consistent: 34 FPS at Low, 27 FPS at Medium, 20 FPS at High, and 19 FPS at Ultra.

At 3840x2160, the frame rates remain respectable for a flight simulator. Low settings average 106 FPS. Medium settings average 82 FPS with a minimum of 70 and maximum of 94. High settings average 62 FPS. Ultra settings average 59 FPS. The step from High to Ultra at 4K is only 3 FPS, suggesting diminishing returns at the highest quality preset.

Notably, the gap between Low and Ultra settings widens with resolution: 78 FPS at 1080p, 63 FPS at 1440p, and 47 FPS at 4K. This indicates that at higher resolutions, the GPU becomes more saturated and the relative impact of quality settings diminishes.

GPU Role

The AMD Radeon RX 7900 XT is built on the RDNA 3.0 architecture with the Navi 31 chip, manufactured on a 5 nm process at TSMC. It contains 57,700 million transistors on a 529 mm² die, with a transistor density of 109.1M per mm². The GPU operates with a base clock of 1387 MHz, a game clock of 2025 MHz, and a boost clock of 2394 MHz.

Memory configuration consists of 20 GB of GDDR6 across a 320-bit bus, providing 800.0 GB/s of bandwidth. The memory clock is 2500 MHz with 20 Gbps effective speed. The GPU features 5,376 shading units, 336 texture mapping units, and 192 render output units, alongside 84 ray tracing cores. Compute capabilities include 51.48 TFLOPS FP32 and 103.0 TFLOPS FP16 (2:1 ratio).

The pixel rate of 459.6 GPixel/s and texture rate of 804.4 GTexel/s help explain the 4K performance. At 4K Medium, the average of 82 FPS with a 70 FPS minimum suggests the GPU's bandwidth and pixel throughput are sufficient for consistent frame delivery. The 20 GB VRAM capacity likely prevents memory capacity from becoming a bottleneck in Microsoft Flight Simulator, which is known for large texture datasets.

The GPU's percentile rank of 55 among all GPUs, with an average benchmark score of 13,745, places it near the middle of the database. Its nearest rivals include the AMD Radeon 660M (13,812, +0.5%) and NVIDIA RTX A2000 Mobile (13,821, +0.5%), while the AMD Radeon RX 9070 XT trails at 13,543 (−1.5%). The RX 7900 XT's measured performance in this game, however, exceeds what its median GPU percentile might suggest, delivering 59 FPS at 4K Ultra.

CPU Role

The AMD Ryzen 5 8400F is a 6-core, 12-thread processor from the 8000 series, built on the Zen 4 architecture with the Phoenix codename. It uses a 4 nm process at TSMC with 25,000 million transistors on a 178 mm² die. The base clock is 4.20 GHz with a boost clock of 4.70 GHz, and the TDP is rated at 65 W.

The cache hierarchy consists of 64 KB L1 per core, 1 MB L2 per core, and 16 MB shared L3. Memory support is DDR5 with dual-channel configuration providing 83.2 GB/s bandwidth. The CPU connects via PCIe Gen 4 with 20 lanes (CPU only), and the multiplier is unlocked for overclocking. It uses the AMD Socket AM5 platform.

In synthetic benchmarks, the 8400F scores 3,685 in Passmark single-thread and 24,389 in Passmark multithread. Cinebench R23 results show 2,943 single-core and 20,851 multi-core. The 3DMark tests reveal scaling from 951 single-thread to 6,165 max-thread. Passmark physics scores 1,332, while integer math hits 74,021 and floating-point math reaches 46,217.

The CPU's percentile rank of 77 among all CPUs, with an average benchmark score of 25,005, places it just 0.2% behind the AMD Ryzen 5 7500F (24,964) and 0.3% behind the Intel Core i7-11850H (24,935). The AMD EPYC 9474F leads by 0.4% at 25,103. These tight margins indicate the 8400F performs at a level consistent with its direct competitors.

In Microsoft Flight Simulator, the CPU's role appears secondary to the GPU at most settings. The 177 FPS at 1080p Low demonstrates the CPU can feed the GPU well beyond typical 60 FPS targets. The consistent scaling across resolutions suggests the CPU does not become a bottleneck until frame rates approach the 170+ range, which only occurs at 1080p Low.

Settings Recommendations

For 4K displays, the data supports Medium settings as the optimal balance. The 82 FPS average with a 70 FPS minimum provides smooth performance with visual quality improvements over Low. High settings at 4K drop to 62 FPS average, which remains playable but with less headroom for demanding scenes. Ultra at 4K yields 59 FPS average, which is borderline for consistent smoothness.

For 1440p displays, High settings at 84 FPS average offer a strong experience, while Ultra at 80 FPS is nearly identical with only a 4 FPS penalty. Medium at 1440p provides 111 FPS average with a 95 FPS minimum, which is ideal for high-refresh-rate monitors. Low at 143 FPS is only recommended for competitive play or maximum frame rates.

For 1080p displays, High settings at 104 FPS and Ultra at 99 FPS both deliver excellent performance. Medium at 138 FPS with a 117 FPS minimum suits high-refresh displays, while Low at 177 FPS maximizes frame rates at the cost of visual fidelity.

The data shows that the step from Medium to High costs roughly 20% performance at each resolution, while High to Ultra costs less than 10%. For most users, Medium at 4K or High at 1440p offers the strongest combination of visual quality and frame rate stability, given the measured minimums stay comfortably above 60 FPS in those configurations.